Question

Вычисли: 15,3⋅8−2⋅15,3+8⋅14,7−2⋅14,7 =

Answer 1

122,4-30,6+117,6-29,4=180

Answer 2

да не за что)))

Answer 3

15,3*8-2*15,3+8*14,7-2*14,7 = 15,3(8-2)+14,7(8-2) = (8-2)(15,3+14,7) = 
= 6*30 = 180